Dark matter search results from the complete exposure of the PICO-60 C3F8 bubble chamber
- NázevTitle
- Dark matter search results from the complete exposure of the PICO-60 C3F8 bubble chamberDark matter search results from the complete exposure of the PICO-60 C3F8 bubble chamber
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- C. Amole, M. Ardid, I. J. Arnquist, D. M. Asner, R. Filgas, F. Mamedov, I. Štekl
- Klíčová slovaKeywords
- SUN
- ExperimentCollaboration
- PICO
- DOIDOI
- 10.1103/PhysRevD.100.022001
- Časopis / citaceJournal / citation
- Physical Review D 100(2), 022001 (2019) · ISSN 2470-0010
- RokYear
- 2019
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Inženýrské aplikace fyziky mikrosvětaEngineering applications of microworld physics
- CitovánoCited by
- 552 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- http://link.aps.org/pdf/10.1103/PhysRevD.100.022001
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
Final results are reported from operation of the PICO-60 C3F8 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the weakly interacting massive particle (WIMP)-proton spin-dependent cross section at 3.2 x 10(-41) cm(2) for a 25 GeV WIMP, improving on previous PICO results for 3-5 GeV WIMPs by an order of magnitude.
Final results are reported from operation of the PICO-60 C3F8 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the weakly interacting massive particle (WIMP)-proton spin-dependent cross section at 3.2 x 10(-41) cm(2) for a 25 GeV WIMP, improving on previous PICO results for 3-5 GeV WIMPs by an order of magnitude.